News and articles from Topstar

Deviation loads are often encountered when operating large injection molding machines, where unexpected lateral forces cause the injection cylinder to deviate from its center. These loads can originate from uneven melt pressure in the injection molding machine, inconsistent clamping force, or slight wear of the guide components. When the molten plastic rushes into one side… Continue reading How to avoid the deviation load of a large injection molding machine?

Unlike hydraulic machines, where pressure variations and fluid compressibility can cause inconsistencies, all electric injection molding machine utilize servo motors and precision ball screw mechanisms to meter polymers. However, even these energy-efficient injection molding machines can experience shot weight fluctuations due to mechanical, thermal, or control-related factors. So we need to diagnose and eliminate the… Continue reading Diagnosing Inconsistent Shot Weights in an All Electric Injection Molding Machine

Screw slippage in plastic injection molding machine poses a serious threat to process stability and part quality. Slippage occurs when the screw’s flights lose their grip on the molten polymer in the barrel, resulting in inconsistent shot sizes, poor melt homogeneity, and fluctuating injection pressures. First, identify the symptoms, which typically manifest as a sudden… Continue reading How to prevent the screw of plastic injection molding machine from slipping?

Injection robot that are calibrated before injection molding production can ensure fast and repeatable part pick and placement. The core of one of them is the rack-and-pinion transmission mechanism. However, over time, the continuous meshing between the rack teeth and the pinion will cause metal fatigue, pitting and dimensional wear. Therefore, rack and pinion wear… Continue reading Tips for checking wear of rack and pinion of injection robot?

When overheating occurs in injection moulding, it affects part quality and shortens equipment life. Mould temperature controller are the central system that regulates mould temperature during the injection cycle. By maintaining a precisely controlled thermal state, they ensure consistent part dimensions, avoid defects, and optimise cycle times. When mould overheating occurs, it is usually due… Continue reading How to prevent overheating with proper mould temperature controller settings?

When hydraulic pressure drops in an injection molding machine, it can result in incomplete mold filling and inconsistent part dimensions. Therefore, our operators need to understand the root cause of the hydraulic pressure drop and take corresponding measures. Then, we will analyze the root cause from the perspective of the injection molding machine manufacturer. First,… Continue reading Analysis of the root cause of the hydraulic pressure drop of the injection molding machine

Choosing the right thermal media when using a mould temperature controller can also impact the accuracy of the final injection moulding process. Of course, not all fluids provide optimal performance across the entire operating range. Topstar mould temperature controllers are compatible with both clean and purified water, ensuring flexibility and reliability in various industrial environments.… Continue reading What is the thermal media compatibility of the mould temperature controller?

Over time, horizontal injection molding machines will experience production interruptions due to mechanical, hydraulic, electrical, or process-related problems. Identifying horizontal injection molding machine failures requires a systematic approach that includes identifying failure symptoms and collecting data to identify the root cause. We will summarize several failure issues, including mechanical components, hydraulic systems, electrical controls, process… Continue reading How to analyze the causes of horizontal injection molding machine failures?

Injection robots are responsible for precise part removal, placement, and secondary operations such as insert loading, stacking, and quality inspection in injection molding. When purchasing or configuring an injection robot, there are two different drive options: a stepper motor drive and a servo drive to drive each axis, whether a simple take-out robot or a… Continue reading Why are servo drives better than stepper motor drives in an injection robot?

Ejector failure and mold sticking are common problems when using hydraulic injection molding machines, which often lead to production downtime, manual part removal, and increased material waste. And these problems are particularly serious in South American manufacturing environments, where high humidity and temperature changes can exacerbate resin adhesion to the mold surface. The main reasons… Continue reading Solve the problems of ejection failure and mold sticking of hydraulic injection molding machine

Unlike pneumatic or hydraulic robots, susceptible to compressibility, heat, and operating noise, servo-driven 3-axis robot provide clean, quiet, and highly repeatable motion with tight and precise speed control. This level of precision makes it easy to handle precision-molded parts, reduce scrap, and increase overall production. In addition, servo drives support complex motion trajectories. In high-speed… Continue reading Why do plastics manufacturers prefer a servo-driven 3-axis robot?

When communicating with customers at offline exhibitions and online, they often ask us questions about the impact of various mold temperature controllers on injection molding machines. As an injection molding machine manufacturer, choosing a water type or oil type mold temperature controller can significantly affect plastic injection molding machines‘ performance and production profitability. Water type… Continue reading Do different types of mold temperature controllers have an impact on injection molding machines?